The defect was closed with a pericardial baffle isolating and assigning the pulmonary vein ostia to the LA.

"Two-Patch" Technique for Atriotomy Repair

Because of the size of the defect and geometry of overriding pulmonary veins, the resulting SVC-RA junction was considerably narrower. The SVC thus was expanded laterally with another pericardial patch incorporated into the atriotomy closure, the two-patch technique(Figure 3).